前回の記事で実装した LogGesture() 関数を用いてシステムが自動的に
- (void)addGestureRecognizer:(UIGestureRecognizer *)gestureRecognizer
で設定するジェスチャの中身を調べてみる。
最初に書いたコードが以下で、
UITextField のサブクラスを作って、サブクラスの addGestureRecognizer: メソッドをオーバーライドしてログを出力する想定になっている。
でもこれだと調べたいクラス毎にサブクラスを作らないといけないので、いちいちサブクラスを作らなくて良いように Runtime API の method_exchangeImplementations を使って UIView の addGestureRecognizer: メソッドをフックしてログ出力をしてみる。
また前回の関数は
void *LogGesture(UIGestureRecognizer *gestureRecognizer);
で引数にジェスチャを取って関数内で NSLog を呼んでいる。これを今回のログ用に内部で NSLog を呼ばずに NSString * を返すよう変更している。
無理やり1ファイルにしたのでごっちゃりしてしまったけどコピペで試せるコードは以下のような感じ。
Storyboard上のViewに UITextField を置いてこのコードを走らせると以下のようにログ出力される。
{
UITextField = (
"UITextTapRecognizer; action=oneFingerTripleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=3;",
"UITextTapRecognizer; action=oneFingerDoubleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITextTapRecognizer; action=twoFingerSingleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=2; numberOfTapsRequired=1;",
"UITapAndAHalfRecognizer; action=tapAndAHalf:; target=UITextInteractionAssistant;",
"UILongPressGestureRecognizer; action=twoFingerRangedSelectGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=2;",
"UITextTapRecognizer; action=oneFingerTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UIVariableDelayLoupeGesture; action=loupeGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=1;"
);
UIWindow = (
"_UISystemGestureGateGestureRecognizer; action=(null); target=(null);"
);
}
おお、_UISystemGestureGateGestureRecognizer とかいう謎な奴が新たに発見された。
Storyboard上で置けそうなViewクラスを片っ端らから置いたログ結果は以下。
Private なクラスが山の様に出てきた。
{
UICollectionView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UICollectionView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UICollectionView;"
);
UINavigationBar = (
"UISwipeGestureRecognizer; action=_handlePopSwipe:; target=UINavigationBar; numberOfTouchesRequired=1;"
);
UIPickerColumnView = (
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UIPickerTableView;"
);
UIPickerTableView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UIPickerTableView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UIPickerTableView;"
);
UIPickerTableViewWrapperCell = (
"UITapGestureRecognizer; action=_tapAction:; target=UIPickerTableViewWrapperCell; numberOfTouchesRequired=1; numberOfTapsRequired=1;"
);
UIScrollView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UIScrollView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UIScrollView;"
);
UISearchBar = (
"UITapGestureRecognizer; action=tappedSearchBar:; target=UISearchBar; numberOfTouchesRequired=1; numberOfTapsRequired=1;"
);
UISearchBarTextField = (
"UITextTapRecognizer; action=oneFingerTripleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=3;",
"UITextTapRecognizer; action=oneFingerDoubleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITextTapRecognizer; action=twoFingerSingleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=2; numberOfTapsRequired=1;",
"UITapAndAHalfRecognizer; action=tapAndAHalf:; target=UITextInteractionAssistant;",
"UILongPressGestureRecognizer; action=twoFingerRangedSelectGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=2;",
"UITextTapRecognizer; action=oneFingerTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UIVariableDelayLoupeGesture; action=loupeGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=1;"
);
UITableView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UITableView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UITableView;"
);
UITableViewCellContentView = (
"UILongPressGestureRecognizer; action=_longPressGestureRecognized:; target=UIPickerTableViewWrapperCell; numberOfTouchesRequired=1;"
);
UITableViewWrapperView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UITableViewWrapperView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UITableViewWrapperView;"
);
UITextField = (
"UITextTapRecognizer; action=oneFingerTripleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=3;",
"UITextTapRecognizer; action=oneFingerDoubleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITextTapRecognizer; action=twoFingerSingleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=2; numberOfTapsRequired=1;",
"UITapAndAHalfRecognizer; action=tapAndAHalf:; target=UITextInteractionAssistant;",
"UILongPressGestureRecognizer; action=twoFingerRangedSelectGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=2;",
"UITextTapRecognizer; action=oneFingerTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UIVariableDelayLoupeGesture; action=loupeGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=1;"
);
UITextView = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=UITextView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=UITextView;",
"UITextTapRecognizer; action=oneFingerTripleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=3;",
"UITextTapRecognizer; action=oneFingerDoubleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITextTapRecognizer; action=twoFingerSingleTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=2; numberOfTapsRequired=1;",
"UITapAndAHalfRecognizer; action=tapAndAHalf:; target=UITextInteractionAssistant;",
"UILongPressGestureRecognizer; action=twoFingerRangedSelectGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=2;",
"UITextTapRecognizer; action=oneFingerTap:; target=UITextInteractionAssistant; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UIVariableDelayLoupeGesture; action=loupeGesture:; target=UITextInteractionAssistant; numberOfTouchesRequired=1;"
);
UIView = (
"MKVariableDelayTapRecognizer; action=handleDoubleTap:; target=MKMapGestureController; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITapGestureRecognizer; action=handleTwoFingerTap:; target=MKMapGestureController; numberOfTouchesRequired=2; numberOfTapsRequired=1;",
"UILongPressGestureRecognizer; action=handleTwoFingerLongPress:; target=MKMapGestureController; numberOfTouchesRequired=2;",
"UIPinchGestureRecognizer; action=handlePinch:; target=MKMapGestureController;",
"UIPanGestureRecognizer; action=handlePan:; target=MKMapGestureController;",
"_MKUserInteractionGestureRecognizer; action=handleTouch:; target=MKMapGestureController;",
"UIRotationGestureRecognizer; action=handleRotation:; target=MKMapGestureController;",
"MKTiltGestureRecognizer; action=handleTilt:; target=MKMapGestureController;",
"UILongPressGestureRecognizer; action=handleLongPress:; target=MKMapView; numberOfTouchesRequired=1;",
"UITapGestureRecognizer; action=_handleTapToSelect:; target=MKMapView; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UITapGestureRecognizer; action=_handleTapToDeselect:; target=MKMapView; numberOfTouchesRequired=1; numberOfTapsRequired=1;"
);
UIWebBrowserView = (
"UIWebTouchEventsGestureRecognizer; action=(null); target=(null);",
"UITapGestureRecognizer; action=_singleTapRecognized:; target=UIWebBrowserView; numberOfTouchesRequired=1; numberOfTapsRequired=1;",
"UITapGestureRecognizer; action=_doubleTapRecognized:; target=UIWebBrowserView; numberOfTouchesRequired=1; numberOfTapsRequired=2;",
"UITapGestureRecognizer; action=_twoFingerDoubleTapRecognized:; target=UIWebBrowserView; numberOfTouchesRequired=2; numberOfTapsRequired=2;",
"_UIWebHighlightLongPressGestureRecognizer; action=_highlightLongPressRecognized:; target=UIWebBrowserView; numberOfTouchesRequired=1;",
"UILongPressGestureRecognizer; action=_longPressRecognized:; target=UIWebBrowserView; numberOfTouchesRequired=1;",
"UIPanGestureRecognizer; action=_twoFingerPanRecognized:; target=UIWebBrowserView;"
);
UIWindow = (
"_UISystemGestureGateGestureRecognizer; action=(null); target=(null);"
);
"_UISwitchInternalViewNeueStyle1" = (
"UILongPressGestureRecognizer; action=_handleLongPressNL:; target=UISwitch; numberOfTouchesRequired=1;",
"UIPanGestureRecognizer; action=_handlePanNL:; target=UISwitch;"
);
"_UIWebViewScrollView" = (
"UIScrollViewDelayedTouchesBeganGestureRecognizer; action=delayed:; target=_UIWebViewScrollView;",
"UIScrollViewPanGestureRecognizer; action=handlePan:; target=_UIWebViewScrollView;",
"UIScrollViewPinchGestureRecognizer; action=handlePinch:; target=_UIWebViewScrollView;"
);
}
